Statistics – Methodology
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..248..421j&link_type=abstract
A Giant Step: from Milli- to Micro-arcsecond Astrometry, Proceedings of the International Astronomical Union, IAU Symposium, Vol
Statistics
Methodology
Astrometry, Stars: Kinematics, White Dwarfs, Subdwarfs
Scientific paper
We are entering the era of microarcsecond astrometric accuracy. Breaking the milliarcsecond barrier will lead to consequent leaps in astronomical understanding of diverse topics. Here we review some current ground-based trigonometric parallax efforts and their recent scientific results. We highlight the current status of nearby star research, including the RECONS census of stars within a 10 pc horizon, white dwarfs and cool subdwarfs, and the push to detect substellar objects via astrometry. We also provide details about recent improvements in the methodology that have permitted the determination of parallaxes with ~1 milliarcsecond accuracy, and what might be done to push routinely into the sub-millarcsecond regime.
Costa Edgar
Henry Todd J.
Ianna Philip A.
Jao Wei Chun
Méndez
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